Display screen or portion thereof with icon



FIG. 1 is a front view of a display screen or portion thereof with icon showing our new design; and,

FIG. 2 is an enlarged view of the encircled portion in FIG. 1.

The dash-dash broken lines depict a display screen or portion thereof that forms no part of the claimed design.

The dot-dash broken lines encircling portions of the claimed design that are illustrated in enlargements form no part of the claimed design. 

CLAIM We claim the ornamental design for a display screen or portion thereof with icon, as shown and described. 